Instead of ‘login’ and ‘password’ use your credentials from https://app.dataforseo.com/api-access

            

# Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access \
login="login" \
password="password" \
cred="$(printf ${login}:${password} | base64)" \
curl --location --request POST "https://api.dataforseo.com/v3/on_page/instant_pages" \
--header "Authorization: Basic ${cred}"  \
--header "Content-Type: application/json" \
--data-raw "[
    {
        "url": "https://dataforseo.com/blog",
        "enable_javascript": true,
        "custom_js": "meta = {}; meta.url = document.URL; meta;"
    }
]"


        

<?php
// You can download this file from here https://cdn.dataforseo.com/v3/examples/php/php_RestClient.zip
require('RestClient.php');
$api_url = 'https://api.dataforseo.com/';
// Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access
$client = new RestClient($api_url, null, 'login', 'password');
$post_array = array();
// example #1 - a simple way to set a task
$post_array[] = array(
   "url" => "https://dataforseo.com/apis/on-page-api"
);
// example #2 - a way to set a task with additional parameters
$post_array[] = array(
   "url" => "https://dataforseo.com/blog",
   "enable_javascript" => true,
   "custom_js" => "meta = {}; meta.url = document.URL; meta;"
);
// this example has a 2 elements, but in the case of large number of tasks - send up to 20 elements per POST request
if (count($post_array) > 0) {
   try {
      // POST /v3/on_page/instant_pages
      // the full list of possible parameters is available in documentation
      $result = $client->post('/v3/on_page/instant_pages', $post_array);
      print_r($result);
      // do something with result
   } catch (RestClientException $e) {
      echo "\n";
      print "HTTP code: {$e->getHttpCode()}\n";
      print "Error code: {$e->getCode()}\n";
      print "Message: {$e->getMessage()}\n";
      print  $e->getTraceAsString();
      echo "\n";
   }
}
$client = null;
?>

            

from random import Random
from client import RestClient
# You can download this file from here https://api.dataforseo.com/v3/_examples/python/_python_Client.zip
client = RestClient("login", "password")
rnd = Random()
post_data = dict()
# example #1 - a simple way to set a task
post_data[rnd.randint(1, 30000000)] = dict(
    url="https://dataforseo.com/apis/on-page-api"
)
# example #2 - a way to set a task with additional parameters
post_data[rnd.randint(1, 30000000)] = dict(
    url = "https://dataforseo.com/blog",
    enable_javascript=True,
    custom_js="meta = {}; meta.url = document.URL; meta;"
)
# POST /v3/on_page/instant_pages
# the full list of possible parameters is available in documentation
response = client.post("/v3/on_page/instant_pages", post_data)
# you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
if response["status_code"] == 20000:
    print(response)
    # do something with result
else:
    print("error. Code: %d Message: %s" % (response["status_code"], response["status_message"]))


        

            

const post_array = [];

post_array.push({
  "url": "https://dataforseo.com/blog",
  "enable_javascript": true,
  "custom_js": "meta = {}; meta.url = document.URL; meta;"
});

const axios = require('axios');

axios({
  method: 'post',
  url: 'https://api.dataforseo.com/v3/on_page/instant_pages',
  auth: {
    username: 'login',
    password: 'password'
  },
  data: post_array,
  headers: {
    'content-type': 'application/json'
  }
}).then(function (response) {
  var result = response['data']['tasks'];
  // Result data
  console.log(result);
}).catch(function (error) {
  console.log(error);
});


        

            

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

namespace DataForSeoDemos
{
    public static partial class Demos
    {
        public static async Task on_page_instant_pages()
        {
            var httpClient = new HttpClient
            {
                BaseAddress = new Uri("https://api.dataforseo.com/"),
                // Instead of 'login' and 'password' use your credentials from https://app.dataforseo.com/api-access
                DefaultRequestHeaders = { Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.ASCII.GetBytes("login:password"))) }
            };
            var postData = new List<object>();
            // example #1 - a simple way to set a task
            postData.Add(new
            {
                url = "https://dataforseo.com/apis/on-page-api"
            });
            // example #2 - a way to set a task with additional parameters
            postData.Add(new
            {
                url = "https://dataforseo.com/blog",
                enable_javascript => true,
                custom_js => "meta = {}; meta.url = document.URL; meta;"
            });
            // POST /v3/on_page/instant_pages
            // the full list of possible parameters is available in documentation
            var taskPostResponse = await httpClient.PostAsync("/v3/on_page/instant_pages", new StringContent(JsonConvert.SerializeObject(postData)));
            var result = JsonConvert.DeserializeObject<dynamic>(await taskPostResponse.Content.ReadAsStringAsync());
            // you can find the full list of the response codes here https://docs.dataforseo.com/v3/appendix/errors
            if (result.status_code == 20000)
            {
                // do something with result
                Console.WriteLine(result);
            }
            else
                Console.WriteLine($"error. Code: {result.status_code} Message: {result.status_message}");
        }
    }
}

        

The above command returns JSON structured like this:

{
  "version": "0.1.20220627",
  "status_code": 20000,
  "status_message": "Ok.",
  "time": "0.9929 sec.",
  "cost": 0.00025,
  "tasks_count": 1,
  "tasks_error": 0,
  "tasks": [
    {
      "id": "07201459-1535-0275-0000-b1297fdec539",
      "status_code": 20000,
      "status_message": "Ok.",
      "time": "0.9231 sec.",
      "cost": 0.00025,
      "result_count": 1,
      "path": [
        "v3",
        "on_page",
        "instant_pages"
      ],
      "data": {
        "api": "on_page",
        "function": "instant_pages",
        "url": "https://dataforseo.com/blog",
        "custom_js": "meta = {}; meta.url = document.URL; meta;"
      },
      "result": [
        {
          "crawl_progress": "finished",
          "crawl_status": null,
          "crawl_gateway_address": "168.119.99.193",
          "items_count": 1,
          "items": [
            {
              "resource_type": "html",
              "status_code": 200,
              "location": null,
              "url": "https://dataforseo.com/blog",
              "meta": {
                "title": "DataForSEO Blog – The Brightest SEO Data Insights",
                "charset": 65001,
                "follow": true,
                "generator": "Powered by WPBakery Page Builder - drag and drop page builder for WordPress.",
                "htags": {
                  "h4": [
                    "Products",
                    "By industry",
                    "By company type",
                    "By application",
                    "Docs",
                    "Resources",
                    "Login",
                    "Categories",
                    "APIs",
                    "Databases",
                    "Solutions",
                    "Knowledge Base",
                    "Resources",
                    "Legal information",
                    "Payment Methods:"
                  ],
                  "h1": [
                    "Blog"
                  ],
                  "h2": [
                    "Seznam in SERP API: Add This Popular Search Engine to Your Rank Tracking Tool",
                    "Introduce Page Screenshots to Your SEO Tool With This New OnPage API Endpoint",
                    "Meet App Data API! 3 ASO Tools You Can Develop With This Powerful Data Source",
                    "Analyze Historical Google SERPs by Keyword with API from DataForSEO",
                    "How to Build an Amazon Keyword Research Tool with API",
                    "How to Use Bing API Data for Keyword Research and Competitor Analysis",
                    "DataForSEO during the invasion of Ukraine: important information to know",
                    "Getting Reviews & Ratings Data at a Low Cost with API from DataForSEO",
                    "SEO Tools Don’t Track Bing SERP Features? Use This API to Get Ahead",
                    "How to Get Google Trends Data with API: 3 SEO Use Cases"
                  ]
                },
                "description": "DataForSEO Blog is dedicated to SEO API best practices, software development use cases, and the latest martech industry insights",
                "favicon": "https://dataforseo.com/wp-content/uploads/2022/04/cropped-favicon_512-32x32.png",
                "meta_keywords": null,
                "canonical": "https://dataforseo.com/blog",
                "internal_links_count": 98,
                "external_links_count": 7,
                "inbound_links_count": 0,
                "images_count": 11,
                "images_size": 0,
                "scripts_count": 43,
                "scripts_size": 0,
                "stylesheets_count": 0,
                "stylesheets_size": 0,
                "title_length": 49,
                "description_length": 128,
                "render_blocking_scripts_count": 23,
                "render_blocking_stylesheets_count": 0,
                "cumulative_layout_shift": 0,
                "meta_title": null,
                "content": {
                  "plain_text_size": 2480,
                  "plain_text_rate": 0.016461342395921834,
                  "plain_text_word_count": 432,
                  "automated_readability_index": 7.008611111111112,
                  "coleman_liau_readability_index": 8.658888888888892,
                  "dale_chall_readability_index": 7.147202962962964,
                  "flesch_kincaid_readability_index": 57.98100000000002,
                  "smog_readability_index": 16.966058625362727,
                  "description_to_content_consistency": 0.4736842215061188,
                  "title_to_content_consistency": 0.7142857313156128,
                  "meta_keywords_to_content_consistency": null
                },
                "deprecated_tags": null,
                "duplicate_meta_tags": [
                  "generator"
                ],
                "spell": null,
                "social_media_tags": {
                  "og:locale": "en_US",
                  "og:type": "article",
                  "og:title": "DataForSEO Blog – The Brightest SEO Data Insights",
                  "og:description": "DataForSEO Blog is dedicated to SEO API best practices, software development use cases, and the latest martech industry insights",
                  "og:url": "https://dataforseo.com/blog",
                  "og:site_name": "DataForSEO",
                  "og:updated_time": "2021-12-10T13:19:44+03:00",
                  "article:published_time": "2017-05-11T11:01:40+03:00",
                  "article:modified_time": "2021-12-10T13:19:44+03:00",
                  "twitter:card": "summary_large_image",
                  "twitter:title": "DataForSEO Blog – The Brightest SEO Data Insights",
                  "twitter:description": "DataForSEO Blog is dedicated to SEO API best practices, software development use cases, and the latest martech industry insights",
                  "twitter:label1": "Time to read",
                  "twitter:data1": "Less than a minute"
                }
              },
              "page_timing": {
                "time_to_interactive": 38,
                "dom_complete": 38,
                "largest_contentful_paint": 0,
                "first_input_delay": 0,
                "connection_time": 15,
                "time_to_secure_connection": 21,
                "request_sent_time": 0,
                "waiting_time": 0,
                "download_time": 2,
                "duration_time": 38,
                "fetch_start": 0,
                "fetch_end": 38
              },
              "onpage_score": 98.17,
              "total_dom_size": 150673,
              "custom_js_response": {
                "url": "https://dataforseo.com/blog"
              },
              "custom_js_client_exception": null,
              "resource_errors": {
                "errors": null,
                "warnings": [
                  {
                    "line": 3,
                    "column": 1,
                    "message": "Has node with more than 60 childs.",
                    "status_code": 1
                  },
                  {
                    "line": 0,
                    "column": 0,
                    "message": "Has more that 1500 nodes.",
                    "status_code": 2
                  }
                ]
              },
              "broken_resources": false,
              "broken_links": false,
              "duplicate_title": false,
              "duplicate_description": false,
              "duplicate_content": false,
              "click_depth": 0,
              "size": 150673,
              "encoded_size": 0,
              "total_transfer_size": 0,
              "fetch_time": "2022-07-20 14:59:26 +00:00",
              "cache_control": {
                "cachable": false,
                "ttl": 0
              },
              "checks": {
                "no_content_encoding": false,
                "high_loading_time": false,
                "is_redirect": false,
                "is_4xx_code": false,
                "is_5xx_code": false,
                "is_broken": false,
                "is_www": false,
                "is_https": true,
                "is_http": false,
                "high_waiting_time": false,
                "no_doctype": false,
                "has_html_doctype": true,
                "canonical": true,
                "no_encoding_meta_tag": false,
                "no_h1_tag": false,
                "https_to_http_links": false,
                "size_greater_than_3mb": false,
                "meta_charset_consistency": true,
                "has_meta_refresh_redirect": false,
                "has_render_blocking_resources": false,
                "low_content_rate": true,
                "high_content_rate": false,
                "low_character_count": false,
                "high_character_count": false,
                "small_page_size": false,
                "large_page_size": false,
                "low_readability_rate": false,
                "irrelevant_description": false,
                "irrelevant_title": false,
                "irrelevant_meta_keywords": false,
                "title_too_long": false,
                "has_meta_title": false,
                "title_too_short": false,
                "deprecated_html_tags": false,
                "duplicate_meta_tags": true,
                "duplicate_title_tag": false,
                "no_image_alt": false,
                "no_image_title": true,
                "no_description": false,
                "no_title": false,
                "no_favicon": false,
                "seo_friendly_url": true,
                "flash": false,
                "frame": false,
                "lorem_ipsum": false,
                "seo_friendly_url_characters_check": true,
                "seo_friendly_url_dynamic_check": true,
                "seo_friendly_url_keywords_check": true,
                "seo_friendly_url_relative_length_check": true
              },
              "content_encoding": "br",
              "media_type": "text/html",
              "server": "cloudflare",
              "is_resource": false,
              "last_modified": {
                "header": null,
                "sitemap": null,
                "meta_tag": "2021-12-10 10:19:44 +00:00"
              }
            }
          ]
        }
      ]
    }
  ]
}